COMP Cams Thumpr Retrofit Hydraulic Roller Camshafts 12-601-8

COMP Cams is bringing back the musclecar sound—and it's nastier than ever! Few things grab our attention at a car show or cruise night more than a car with a thumping high performance idle. In an ongoing quest to provide you with the performance and sound you demand, COMP Cams' engineering team proudly introduces the Thumpr retrofit hydraulic roller camshafts. They are a series of camshafts designed for use in engines that were originally equipped with flat tappet camshafts. The lobe profile and grind characteristics use a combination of an early exhaust valve opening, a long exhaust duration, and a generous amount of intake and exhaust overlap to maximize the rough-idling characteristics of the cams. They give you a seriously aggressive exhaust note without negatively impacting the power output or streetability of the engine. Thumpr camshafts are available in three different grind profiles. Each one will produce a rough, racy exhaust note and impressive amounts of horsepower and torque within a different rpm range. COMP Cams Thumpr Series camshafts feature a cutting-edge hydraulic roller design that delivers a substantial power increase over identical hydraulic flat tappet grinds—without sacrificing reliability or ease of maintenance.Brand: COMP Cams
Manufacturer's Part Number: 12-601-8
Part Type: Camshafts
Product Line: COMP Cams Thumpr Retrofit Hydraulic Roller Camshafts
HP Direct Part Number: CCA-12-601-8
UPC: 036584148395
Cam Style: Hydraulic roller, Retro-fit
Camshaft Use: Street/Strip
Basic Operating RPM Range: 2,200-5,900
Intake Duration at 050 inch Lift: 235
Exhaust Duration at 050 inch Lift: 249
Duration at 050 inch Lift: 235 int./249 exh.
Advertised Intake Duration: 291
Advertised Exhaust Duration: 311
Advertised Duration: 291 int./311 exh.
Intake Valve Lift with Factory Rocker Arm Ratio: 0.522 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.509 in.
Valve Lift with Factory Rocker Arm Ratio: 0.522 int./0.509 exh.
Lobe Separation (degrees): 107
Remanufactured: No
Computer-Controlled Compatible: No
Grind Number: 291THR7
Valve Springs Required: Yes
Quantity: Sold individually.
Notes: Designed for engines originally equipped with flat tappet camshaft.